Gas extraction method and device, storage medium, processor and program product

Abstract

The invention discloses a gas extraction method and device, a storage medium, a processor and a program product. The method comprises the following steps: determining geological structure characteristics of a geographical environment in which a to-be-developed resource is located; based on the geological structure characteristics, an initial gas extraction strategy corresponding to the to-be-developed resources is determined, and the initial gas extraction strategy is used for representing a rule for extracting pre-extracted gas in the to-be-developed resources; under the initial gas extraction strategy, a predicted extraction result of the pre-extracted gas is predicted, and the predicted extraction result is used for representing the extraction condition of the pre-extracted gas; according to the predicted extraction result, the initial gas extraction strategy is adjusted, and a target gas extraction strategy is obtained; and extracting pre-extracted gas from the to-be-developed resources according to the target gas extraction strategy. The technical problem that the gas extraction efficiency is low is solved.

Description

Technical Field

[0001] The present application relates to the field of energy processing, and in particular, to a gas extraction method, device, storage medium, processor and program product. Background Art

[0002] At present, coal resources are accompanied by abundant gas (coalbed methane). Due to the huge gas content, coal outbursts or coal and gas outbursts are prone to occur during the coal resource mining process.

[0003] Among the relevant technologies, gas control is still a difficult problem that is difficult to solve in coal mine production. Gas control is mainly carried out through high-drawn tunnels on the coal seam roof, pre-buried pipelines in the goaf, high-position drilling, etc. However, the above methods have problems such as low efficiency, low construction precision, high cost, and low extraction effect, which greatly restrict the control of coal mine gas and there are technical problems to solve the low efficiency of gas extraction.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present application provide a gas extraction method, device, storage medium, processor and program product to at least solve the technical problem of low gas extraction efficiency.

[0006] According to one aspect of an embodiment of the present application, a method for extracting gas is provided, which may include: determining the geological structure characteristics of the geographical environment where the resources to be developed are located; based on the geological structure characteristics, determining an initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; under the initial gas extraction strategy, predicting the predicted extraction results of the pre-extracted gas, wherein the predicted extraction results are used to characterize the extraction of the pre-extracted gas; according to the predicted extraction results, adjusting the initial gas extraction strategy to obtain a target gas extraction strategy; according to the target gas extraction strategy, extracting the pre-extracted gas from the resources to be developed.

[0007] Optionally, based on the geological structure characteristics, an initial gas extraction strategy corresponding to the resources to be developed is determined, including: based on the geological structure characteristics, predicting the gas hazard data of the resources to be developed during the development stage; based on the gas hazard data, determining the initial gas extraction strategy.

[0008] Optionally, based on the geological structure characteristics, the gas hazard data of the resources to be developed during the development stage is predicted, including: using the geological structure characteristics to simulate the changes of the resources to be developed during the development stage to obtain the gas hazard data.

[0009] Optionally, the method may further include: obtaining the mining conditions of the resource to be developed and the geological conditions of the mining area for mining the resource to be developed; the determining the initial gas extraction strategy based on the gas hazard data includes: determining the initial gas extraction strategy based on the mining conditions, the geological conditions and the gas hazard data. Optionally, the method may further include: determining the distribution data of stress loads in the resource to be developed and the permeability of the resource to be developed during the mining of the resource to be developed; predicting the amount of depressurized gas to be extracted in the resource to be developed based on the distribution data and the permeability; and determining the gas extraction strategy for extracting the depressurized gas based on the amount to be extracted.

[0010] Optionally, based on the distribution data and the permeability, the amount of depressurized gas to be extracted from the resources to be developed is predicted, including: using simulation software to simulate the distribution data and the permeability to obtain the amount to be extracted.

[0011] According to another aspect of an embodiment of the present application, a gas extraction device is also provided, which may include: a first determination unit, used to determine the geological structure characteristics of the geographical environment where the resources to be developed are located; a second determination unit, used to determine the initial gas extraction strategy corresponding to the resources to be developed based on the geological structure characteristics, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; a prediction unit, used to predict the predicted extraction results of the pre-extracted gas under the initial gas extraction strategy, wherein the predicted extraction results are used to characterize the extraction situation of the pre-extracted gas; an adjustment unit, used to adjust the initial gas extraction strategy according to the predicted extraction results to obtain a target gas extraction strategy; an extraction unit, used to extract the pre-extracted gas from the resources to be developed according to the target gas extraction strategy.

[0012] According to another aspect of an embodiment of the present application, a computer-readable storage medium is also provided, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the gas extraction method of the embodiment of the present application.

[0013] According to another aspect of an embodiment of the present application, a processor is further provided, the processor being used to run a program, wherein the program, when run by the processor, executes the gas extraction method of the embodiment of the present application.

[0014] According to another aspect of an embodiment of the present application, a computer program product is further provided. The computer program product includes computer instructions, wherein the computer instructions, when executed by a processor, implement the gas extraction method of the embodiment of the present application.

[0015] In an embodiment of the present application, the geological structure characteristics of the geographical environment where the resources to be developed are located are determined; based on the geological structure characteristics, an initial gas extraction strategy corresponding to the resources to be developed is determined, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; under the initial gas extraction strategy, a predicted extraction result of the pre-extracted gas is predicted, wherein the predicted extraction result is used to characterize the extraction of the pre-extracted gas; according to the predicted extraction result, the initial gas extraction strategy is adjusted to obtain a target gas extraction strategy; according to the target gas extraction strategy, the pre-extracted gas is extracted from the resources to be developed. That is to say, in an embodiment of the present application, the geological structure characteristics of the geographical environment where the resources to be developed are located are determined, and based on the geological structure characteristics, the initial gas extraction strategy is determined. The extraction of pre-extracted gas under the initial gas extraction strategy can be predicted, and based on the extraction situation, the initial extraction strategy is adjusted to obtain a target gas extraction strategy. The pre-extracted gas can be extracted according to the target gas extraction strategy, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving gas extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 is a flow chart of a gas extraction method according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of a high-position directional drilling fracturing structure according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a high-position directional drilling gas extraction structure according to an embodiment of the present application;

[0020] Figure 4 is a schematic diagram of stress and strain of overburden rock caused by mining and pressure relief according to an embodiment of the present application;

[0021] Figure 5 is a schematic diagram of overburden coal rock fissures and permeability in mining-induced pressure relief according to an embodiment of the present application;

[0022] Figure 6 is a schematic diagram of a gas extraction device according to an embodiment of the present application;

[0023] Figure 7 is a structural block diagram of a computer terminal according to an embodiment of the present application;

[0024] Figure 8It is a block diagram of an electronic device for a gas extraction method according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] According to an embodiment of the present application, an embodiment of a gas extraction method is provided. The steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0028] In this embodiment, a gas extraction method is proposed. The method can determine the geological structure characteristics of the geographical environment where the resources to be developed are located, and determine the initial gas extraction strategy based on the geological structure characteristics. The extraction situation of pre-extracted gas under the initial gas extraction strategy can be predicted. Based on the extraction situation, the initial extraction strategy is adjusted to obtain a target gas extraction strategy. The pre-extracted gas can be extracted according to the target gas extraction strategy, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving gas extraction efficiency.

[0029] Figure 1 FIG. 1 is a flow chart of a gas extraction method according to an embodiment of the present application. Figure 1 As shown, the method may include the following steps:

[0030] Step S102, determining the geological structure characteristics of the geographical environment where the resources to be developed are located.

[0031] In the technical solution provided in the above step S102 of the present application, the above-mentioned resources to be developed may be coal resources. The above-mentioned geotectonic features may be used to characterize the geotectonic features of the geographical environment where the resources to be developed are located, may be used to characterize the occurrence characteristics of coal resources and the structural characteristics of overburden, and may be used to characterize the thickness, inclination, depth, compressive strength, shear strength, plasticity index, degree of fissure development, continuity of coal seams, gas content and pressure, and strength and fissure development of top and bottom plate lithology. It should be noted that this is only an example, and there is no specific restriction on the type of geological structural features.

[0032] Step S104, based on the geological structure characteristics, determine the initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting the pre-extracted gas in the resources to be developed.

[0033] In the technical solution provided in the above step S104 of the present application, based on the geological structure characteristics, the initial gas extraction strategy corresponding to the resource to be developed can be determined. The gas extraction strategy can be used to determine the rules for extracting the pre-extracted gas in the resource to be developed, which may include the layout height, length, direction, well inclination and azimuth of high-position directional drilling, as well as the diameter size, the optimal displacement and pressure of the fracturing construction, etc. It should be noted that this is only for example, and there is no specific restriction on the content of the gas extraction strategy. The above-mentioned pre-extraction of gas may refer to the gas extracted from the coal seam in advance by special equipment and technology before the exploitation of the resource to be developed (for example, a coal mine).

[0034] Optionally, the initial gas extraction strategy (ie, the extraction method of pre-extraction gas) may include drilling extraction, hydraulic fracturing extraction, etc. It should be noted that this is only an example, and the content of the initial gas extraction strategy is not specifically limited.

[0035] Optionally, the geological structural features of the resource to be developed (e.g., coalfield) may include, but are not limited to, data such as coal seam thickness, inclination, depth, physical and mechanical properties of coal seams, degree of fracture development, and lithology and fracture distribution of the roof and floor plates. Based on the above geological structural features, the geological structure of the resource to be developed is analyzed to further obtain an initial gas extraction strategy.

[0036] Step S106, predicting the extraction result of the pre-extracted gas under the initial gas extraction strategy, wherein the predicted extraction result is used to characterize the extraction condition of the pre-extracted gas.

[0037] In the technical solution provided in the above step S106 of the present application, the extraction situation of the pre-extracted gas in the resources to be developed according to the initial gas extraction strategy can be predicted to obtain a predicted extraction result.

[0038] Optionally, with the help of production capacity simulation software, the gas content of the pre-extracted gas remaining after pre-extraction can be predicted. For example, the production capacity simulation software can be used to simulate and predict the remaining gas content and reservoir pressure changes of the pre-extracted gas after pre-extraction according to the initial gas extraction strategy, thereby obtaining the predicted extraction results. Based on the predicted extraction results, it is helpful to optimize the density of drilling holes and the arrangement of drilling holes.

[0039] Step S108, adjusting the initial gas extraction strategy according to the predicted extraction result to obtain the target gas extraction strategy.

[0040] In the technical solution provided in the above step S108 of the present application, the extraction of pre-extracted gas can be determined based on the predicted extraction result, and the initial gas extraction strategy can be adjusted based on the extraction of pre-extracted gas to obtain the target gas extraction strategy. For example, if the predicted extraction result is used to characterize that there is still a lot of pre-extracted gas after the pre-extracted gas is extracted according to the initial gas extraction strategy, the initial gas extraction strategy can be adjusted, for example, by increasing the frequency of extracting pre-extracted gas and other parameters to obtain the target gas extraction strategy. It should be noted that this is only an example, and there is no specific limitation on the method of adjusting the initial gas extraction strategy.

[0041] Step S110, extracting pre-extracted gas from the resources to be developed according to the target gas extraction strategy.

[0042] In the technical solution provided in the above step S110 of the present application, pre-extracted gas can be extracted from the resources to be developed according to the target gas extraction strategy. For example, if the target gas extraction strategy can be rules such as the location of drilling and the frequency of extraction, then drilling and extraction operations can be performed at the specified location according to the target gas extraction strategy, thereby completing the extraction of the pre-extracted gas.

[0043] At present, coal seam groups are developed. For example, the Ordos Basin and Qinshui Basin are rich in coal resources, and there are many resources to be developed. However, coal resources are accompanied by abundant coalbed methane (gas). Due to the huge gas content, coal outbursts or coal and gas outbursts are prone to occur during the mining process. Among them, gas disasters are one of the important factors restricting the safe and efficient production of coal mines. After coal seam mining, the overburden on the upper roof moves or breaks, resulting in a large number of cracks, which in turn causes a large amount of gas to accumulate in the cracks and goafs. Under the influence of ventilation and airflow, gas accumulates, causing over-limit and affecting the safe mining of the working face.

[0044] In the relevant technology, gas control is still a difficult problem that is difficult to solve in coal mine production. Gas control is mainly carried out through high extraction lanes on the coal seam roof, pre-buried pipelines in the goaf, high-position drilling, etc., but the above methods have problems such as low efficiency, low construction accuracy, high cost, and low extraction effect, which greatly restrict the control of coal mine gas. Therefore, in this embodiment, it is proposed to extract and unload gas by high-position directional drilling on the roof. By constructing high-position directional drilling holes on the coal seam roof, on the one hand, the advance extraction of gas from the working face is achieved through staged fracturing. On the other hand, during the recovery process of the working face, the overburden of the working face roof is deformed and collapsed to relieve pressure, and the gas generated during the mining process is extracted, thereby achieving the purpose of multiple uses of one hole, reducing the pressure on the mine ventilation system, and ensuring the safe production of the recovery working face.

[0045] At the same time, in order to solve a series of coalbed methane (gas) problems generated during mining, a multi-purpose gas extraction method based on high-position directional drilling of the roof came into being. The multi-purpose hole can not only be used as a channel for pre-extraction of gas before mining on the working face, but also as a channel for decompression gas extraction during mining on the working face. Therefore, in order to solve the problems of pre-extraction before mining and decompression gas during mining, a channel is used to solve gas disasters in different production stages.

[0046] In this embodiment, on the one hand, in order to mine coal resources safely and efficiently, coalbed methane (i.e., pre-extraction of gas) in high-gas mines can be extracted, but due to the complex process of ground horizontal wells, the cost is high and the gas extraction cycle is long. Therefore, for native structural coal or tectonic coal, an underground high-position directional drilling process and an underground hydraulic fracturing technology process for coal mines are proposed. This method can not only solve the problem of difficult drilling and hole formation in soft coal, but also provide a channel for gas extraction, realizing the extraction of pre-extraction before mining and pressure relief gas during mining.

[0047] On the other hand, considering that the geological conditions and mining conditions of different mines are complex and changeable, the gas distribution in the mining fissure field is unclear, and the number of hard rock formations encountered is increasing. The problems of efficient drilling and hole formation in hard rock and poor gas extraction effect due to the lack of development of hard rock fissures are prominent, which largely restricts the normal production of the working face. Therefore, in the process of coal resource mining, this embodiment considers multiple uses of one hole to avoid separate construction of extraction drilling holes during disaster management in different production stages, which overlap and influence each other in time and space. At the same time, separate drilling for disaster management at different stages will also increase the drilling construction cost and extend the production cycle.

[0048] Optionally, in order to solve the contradiction between the arrangement of drilling holes for independent resource mining and disaster management in the process of coal resource mining, a gas extraction method based on a multi-purpose high-position directional hole in the roof is proposed in this embodiment. This method constructs a shaft that can be used for a long time on the roof before coal mining, determines the initial gas extraction strategy of the shaft, combines the characteristics of different production stages and the characteristics of gas migration, determines the initial gas extraction strategy, and adjusts the above initial gas extraction strategy to obtain the target gas extraction strategy, and extracts the pre-extracted gas through the target gas extraction strategy. At the same time, gas resources at different stages can be extracted in sequence through this drilling hole to solve the problem of gas disaster management at different stages.

[0049] Optionally, this embodiment utilizes high-position directional holes based on the roof and proposes different gas extraction methods to process the directional holes, so as to realize the extraction of gas generated by the resources to be developed at different stages. The above-mentioned one-hole multi-purpose gas extraction method solves the problem of constructing multiple boreholes in the existing coal resource mining process and in the gas disaster management process at different stages, which wastes costs and seriously restricts the safe and efficient mining of coal resources, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving gas extraction efficiency.

[0050] Through the above-mentioned steps S102 and S110 of the present application, the geological structure characteristics of the geographical environment where the resources to be developed are located are determined; based on the geological structure characteristics, the initial gas extraction strategy corresponding to the resources to be developed is determined, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; under the initial gas extraction strategy, the predicted extraction results of the pre-extracted gas are predicted, wherein the predicted extraction results are used to characterize the extraction conditions of the pre-extracted gas; according to the predicted extraction results, the initial gas extraction strategy is adjusted to obtain a target gas extraction strategy; according to the target gas extraction strategy, the pre-extracted gas is extracted from the resources to be developed. That is to say, in an embodiment of the present application, the geological structure characteristics of the geographical environment where the resources to be developed are located are determined, and based on the geological structure characteristics, the initial gas extraction strategy is determined. The extraction of pre-extracted gas under the initial gas extraction strategy can be predicted, and based on the extraction situation, the initial extraction strategy is adjusted to obtain a target gas extraction strategy. The pre-extracted gas can be extracted according to the target gas extraction strategy, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving gas extraction efficiency.

[0051] The above method of this embodiment is further introduced below.

[0052] As an optional implementation, step S104, based on the geological structure characteristics, determines the initial gas extraction strategy corresponding to the resources to be developed, including: based on the geological structure characteristics, predicting the gas hazard data of the resources to be developed during the development stage; based on the gas hazard data, determining the initial gas extraction strategy.

[0053] In this embodiment, based on the geological structure characteristics, the gas hazard data of the resources to be developed during the development stage can be predicted. The gas hazard data can be used to determine the characteristics of the occurrence of pre-extraction gas disasters, and can be used to characterize data such as disasters caused by pre-extraction gas. For example, it can be the evolution law of surrounding rock stress and the characteristics of overburden rock damage. It should be noted that this is only an example, and there is no specific restriction on the type of gas hazard data.

[0054] Optionally, based on the occurrence characteristics of coal resources and the structural properties of overburden, the stress evolution law of surrounding rock and the damage characteristics of overburden before and during mining can be determined, so as to determine the layout and length of the boreholes in combination with the geological conditions of the mining area, and the transformation process and control process for gas disaster control can be determined, so as to obtain the initial gas extraction strategy.

[0055] As an optional implementation method, based on geological structure characteristics, gas hazard data of the resources to be developed during the development stage is predicted, including: using geological structure characteristics to simulate the changes of the resources to be developed during the development stage to obtain gas hazard data.

[0056] In this embodiment, the geological structure characteristics can be used to simulate the changes in the resources to be developed during the development stage to obtain gas hazard data, so as to determine the initial gas extraction strategy based on the gas hazard data.

[0057] Optionally, numerical simulation software (FLAC3D) can be used to perform numerical simulation on the resources to be developed based on the geological structure characteristics to determine the stress change characteristics of the overburden in the resources to be developed before and after mining (i.e., gas hazard data). Furthermore, based on the gas hazard data, the initial gas extraction strategy can be determined in combination with specific stratigraphic conditions, physical and mechanical properties of coal strata, and expansion morphological characteristics of cracks. The gas extraction strategy may include the layout height and length of the borehole.

[0058] Optionally, a borehole that can be used for a long time is constructed at a certain distance from the coal seam roof, and the borehole treatment is carried out before the coal seam is mined. The above-mentioned borehole can be used to transform and extract the migration channel of the pre-extracted gas.

[0059] As an optional implementation, the method may also include: obtaining mining conditions of the resources to be developed, and geological conditions of the mining area for mining the resources to be developed; determining an initial gas extraction strategy based on gas hazard data, including: determining an initial gas extraction strategy based on mining conditions, geological conditions and gas hazard data.

[0060] In this embodiment, the mining conditions of the resources to be developed and the geological conditions of the mining area for mining the resources to be developed can be obtained, and the initial gas extraction strategy can be determined based on the mining conditions, geological conditions and gas hazard data. Among them, the above-mentioned mining conditions can be used to determine other non-geological factors that affect coal mining and gas extraction, which may include but are not limited to: mining technology and equipment, mining plans and schedules, ventilation systems and gas management, safety and environmental standards and other data. Geological conditions can be used to determine the geological properties of a ore deposit or a mining area, including but not limited to: stratigraphic structure, lithological characteristics, tectonic activities and other contents. It should be noted that this is only an example, and there is no specific restriction on the content of mining conditions and geological conditions.

[0061] Optionally, since the borehole needs to be used for gas extraction in two stages, that is, the extraction of pre-extraction gas and the extraction of pressure relief gas, the position, length, stability, distance from the coal seam and the influence of overburden movement on the borehole should be considered in the process of borehole design. Therefore, when designing the initial gas extraction strategy, it is necessary to fully consider the length of the climbing section of the borehole and the length of the horizontal section, pipe diameter, well inclination, azimuth, fracturing spacing and other information. In this embodiment, the geological conditions, mining conditions and gas hazard data of the mine can be combined to design according to the specific geological conditions and mine requirements during the implementation process.

[0062] In this embodiment, the initial gas extraction strategy can be determined based on any one of the geological conditions, mining conditions and gas hazard data. It should be noted that this is only an example and there is no specific limitation on the method of determining the gas extraction strategy.

[0063] Optionally, the above-mentioned pressure relief gas may refer to the gas released during the coal mining process due to changes in ground stress caused by mining activities, which reduces the gas pressure in the coal seam and is then released.

[0064] As an optional implementation, the method may also include: determining the distribution data of stress loads in the undeveloped resources and the permeability of the undeveloped resources during the process of mining the undeveloped resources; predicting the amount of pressure relief gas to be extracted in the undeveloped resources based on the distribution data and the permeability; and determining a gas extraction strategy for extracting the pressure relief gas based on the amount to be extracted.

[0065] In this embodiment, as the mining progress, mining method, geological conditions and other factors of the resources to be developed change, depressurized gas will be released from the resources to be developed. Therefore, during the development process, the depressurized gas needs to be extracted.

[0066] Optionally, in the process of exploiting the resources to be developed, the distribution data of the stress load in the resources to be developed and the permeability of the resources to be developed can be determined; based on the distribution data and the permeability, the amount of pressure relief gas to be extracted in the resources to be developed can be predicted; based on the amount to be extracted, the gas extraction strategy for extracting the pressure relief gas can be determined.

[0067] Optionally, as the working face advances forward, the coal rock mass in front of the working face cracks and settles, so that the stress of the coal rock mass is released and decompressed. The mining cracks and primary pores and cracks generated can provide a certain flow channel and regional space for the flow of gas, thereby generating decompression gas. The migration of internal gas (for example, decompression gas) will cause the coal rock mass to have a mechanical effect on the pore pressure, further changing the initial migration and occurrence state of the gas. Therefore, in this embodiment, it is necessary to determine the distribution data of the stress load in the resources to be developed, as well as the permeability of the resources to be developed; based on the distribution data and permeability, the amount of decompression gas to be extracted in the resources to be developed can be predicted to determine the gas extraction strategy for extracting the decompression gas. The decompression gas can be extracted according to the above-mentioned gas extraction strategy.

[0068] Optionally, the distribution range of the mining unloading stress load (i.e., distribution data) can be obtained to provide certain theoretical guidance for mining unloading gas extraction. At the same time, the permeability of the coal rock in each partition can be calculated. With the help of simulation software (e.g., Comsol), a mining overburden stress-crack-seepage coupling model can be constructed based on the distribution data and permeability. The model can be used to predict the extraction effect of unloading gas. That is, the model can be used to determine the migration process of unloading gas and evaluate the gas extraction effect during the mining process, thereby providing certain guidance for the optimization of the layout of mining unloading boreholes in the later stage, thereby revealing the temporal and spatial migration laws of mining unloading gas extraction. Furthermore, along the direction of the advancement of the coal mining face, in the process of continuous development of the mining fracture zone, the pressure relief gas adsorbed in the overlying coal seam will flow along the fracture network system to the space where the fractures continue to extend. Due to the flow and migration of gas, the pressure relief gas enrichment section will also undergo dynamic changes with the progress of the mining activities. By using the mining overburden stress-fracture-seepage coupling model, the pressure relief gas can be further dynamically predicted, so that the migration process of the pressure relief gas can be studied, and the extraction effect of the pressure relief gas during the mining process can be evaluated, thereby providing certain guidance for the optimization of the layout of the later mining pressure relief drilling holes. If the content of the pressure relief gas (that is, the amount to be extracted) is high, the gas extraction strategy for extracting the pressure relief gas can be determined based on the amount to be extracted, and the gas extraction strategy can be used to control the pressure relief gas, thereby ensuring the safe and efficient production of the working face.

[0069] As an optional implementation, based on the distribution data and permeability, the amount of depressurized gas to be extracted from the resources to be developed is predicted, including: using simulation software to simulate the distribution data and permeability to obtain the amount to be extracted.

[0070] In this embodiment, simulation software can be used to simulate the distribution data and permeability to obtain a mining-induced overburden stress-crack-seepage coupling model, which can be used to dynamically predict the depressurized gas to obtain the amount of depressurized gas to be extracted from the resources to be developed.

[0071] Optionally, in order to explore the migration law of gas after mining and depressurization and the amount of gas to be extracted, further analysis and research can be conducted on the permeability changes of the overburden on the upper part of the coal seam during coal seam mining to obtain the amount to be extracted. It should be noted that there is no specific restriction on the method of determining the amount to be extracted here, as long as the method of determining the amount to be extracted is based on distribution data and permeability, it should be within the scope of protection of this application.

[0072] In an embodiment of the present application, a report to be processed of a target object is obtained; a chapter to be processed in the report to be processed is determined; a third feature vector set corresponding to the chapter to be processed is determined, wherein the third feature vector set is at least used to characterize the text content of the chapter to be processed and / or the attribute information corresponding to the chapter to be processed; at least one associated chapter associated with the chapter to be processed is determined in multiple historical chapters using the third feature vector set; the degree of association between at least one associated chapter and the chapter to be processed is determined respectively; based on the degree of association, the technical problem of low gas extraction efficiency is solved, and the technical effect of improving gas extraction efficiency is achieved. A chapter to be recommended is determined in at least one associated chapter.

[0073] The following is a detailed description of a gas extraction method based on a multi-purpose one-hole directional hole in the roof of the present application in conjunction with the accompanying drawings and specific implementation methods. It should be noted that the present application is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present application.

[0074] In this embodiment, a gas extraction method based on a multi-purpose one-hole directional hole at a high position in the roof of the present application is described in detail by taking mining area 1 as an example.

[0075] Optionally, mining area 1 is rich in coal resources (i.e., resources to be developed), and the coal seams are rich in methane. During the coal resource exploitation process, coal and gas are particularly prominent. The coal seam roof is mainly composed of hard sandstone and mudstone. In order to solve the gas problem at different stages in the coal resource exploitation process, this embodiment proposes a gas extraction method of drilling multiple holes in the roof through high-position directional drilling.

[0076] Optionally, before coal mining, high-position directional boreholes are constructed in advance on the roof, and the directional boreholes are hydraulically fractured to pre-extract gas from the coal seam in advance. Later, as the coal mining face advances, the coal rock mass in front of the face cracks, settles and relieves pressure, so that the stress of the coal rock mass is released and the pressure is relieved. The pressure-relieved gas adsorbed in the overlying coal seam will be released and flow along the pore and fracture network system of the coal matrix to the goaf. At the same time, the pressure-relieved gas accumulated in the goaf will also flow along the pore and fracture network to the goaf. The mining-induced fractures and primary fractures provide certain seepage channels for the flow of gas in the goaf, and the gas migrates along the seepage channels to the extraction boreholes.

[0077] In this embodiment, the occurrence characteristics and structural characteristics (i.e., geological structure characteristics) of the coal resources can be used to determine the gas disasters that may occur when the resources to be developed are about to be mined, during mining, and after mining, and obtain gas hazard data. The gas data can include the characteristics of the occurrence of gas disasters and gas disasters before and during mining. It should be noted that this is only an example, and there is no specific restriction on the content of the gas data. Based on the above gas hazard data, the drilling and completion process, transformation process, and control process for disaster management can be determined.

[0078] In this embodiment, Figure 2 is a schematic diagram of a high-position directional drilling fracturing structure according to an embodiment of the present application, such as Figure 2 As shown, a high-position directional borehole 201 that can be used for a long time is constructed in a characteristic area of ​​gas resource occurrence, and the high-position directional borehole 201 is constructed to the roof of the coal seam. During the gas extraction process, drilling, lowering of screens, and segmented fracturing of the reservoir using a fracturing tool 203 and a fracturing string 202 are performed.

[0079] Figure 3 is a schematic diagram of a high-position directional drilling gas extraction structure according to an embodiment of the present application, such as Figure 3 As shown, through fracturing, communication between the fracture and the coal seam can be achieved and gas 301 can be extracted.

[0080] Optionally, after a period of extraction, the remaining gas content after pre-extraction can be predicted with the help of production capacity simulation software. For example, the production capacity simulation software can be used to simulate pre-extraction and predict the remaining gas content and reservoir pressure changes after the pre-extracted gas is extracted according to the initial gas extraction strategy. By predicting the extraction results, the initial gas extraction strategy can be adjusted to obtain the target gas extraction strategy, which will help to increase the density of drilling holes and optimize the drilling layout.

[0081] In this embodiment, Figure 4 is a schematic diagram of stress and strain of overburden rock caused by mining and pressure relief according to an embodiment of the present application, such as Figure 4 As shown in the figure, as the working face advances forward, the coal rock mass in front of the working face cracks and settles, which releases the stress and relieves the pressure in the coal rock mass. The mining cracks and primary pores and cracks generated can provide certain flow channels and regional spaces for the flow of gas. The migration of internal gas will cause the coal rock mass to have a mechanical influence on the pore pressure, further changing the initial migration and occurrence state of the gas. The distribution range of the pressure relief stress load can be determined, thereby providing certain theoretical guidance for mining pressure relief gas extraction.

[0082] Figure 5 is a schematic diagram of overburden coal rock cracks and permeability according to an embodiment of the present application, such as Figure 5As shown in the figure, at the same time, the coal rock permeability of each zone can be calculated, and the mining overburden stress-crack-seepage coupling model can be established with the help of Comsol software to predict the mining unloading gas extraction effect, so as to determine the migration process of the unloading gas and evaluate the gas extraction effect during the mining process, thereby providing certain guidance for the layout optimization of the later mining unloading boreholes, thereby revealing the temporal and spatial migration law of mining unloading gas extraction.

[0083] In this embodiment, as the mining fracture zone continues to develop along the direction of the coal mining face, the decompression gas adsorbed inside the overlying coal seam will flow along the fracture network system to the space where the fractures continue to extend.

[0084] Optionally, due to the flow and migration of gas, the depressurized gas-enriched section will also undergo dynamic changes as the mining activities proceed. Repeated use of the above-mentioned mining overburden stress-crack-seepage coupling model can realize dynamic prediction of depressurized gas, thereby determining the gas migration process and evaluating the gas extraction effect during the mining process, thereby providing certain guidance for the layout optimization of subsequent mining depressurization drilling holes. If the mining depressurization gas content is high, other measures need to be taken to control it to ensure safe and efficient production of the working face.

[0085] In this embodiment, since the borehole is used for gas extraction in two stages, the position, length, stability, distance from the coal seam and the impact of overburden movement on the borehole must be taken into consideration during the borehole design process. Therefore, the length, diameter, well inclination, azimuth, fracturing spacing, etc. of the wellbore must be fully considered during the design process, and the implementation process must be designed according to the specific geological conditions and mine requirements.

[0086] Optionally, after the high-position directional drilling construction is completed, staged fracturing may be carried out to achieve the target layer's production increase and transformation, increase the channel for gas migration, and after a certain period of gas extraction, in order to verify the effect of eliminating sudden changes, the production capacity simulation software (e.g., CMG) is used to combine the coal seam reservoir parameters and fracturing parameters to predict the gas content per ton of coal, so as to evaluate the effect of pre-extraction before gas extraction. Among them, the above-mentioned CMG can be used to determine the simulation evaluation of the extraction effect of pre-extraction in advance and to perform sudden changes evaluation, and the above-mentioned Comsol can be used to establish a mining overburden stress-crack-seepage coupling model to predict the mining unloading gas extraction effect. It should be noted that this is only an example, and there is no specific restriction on the method of determining the extraction effect of pre-extraction gas and the method of determining the extraction effect of unloading gas.

[0087] Optionally, Table 1 is a simulation parameter table involved in the capacity simulation process. As shown in Table 1, the following simulation parameters can be input during the capacity simulation process.

[0088] Table 1 Simulation parameters involved in the capacity simulation process

[0089]

[0090]

[0091] Optionally, after a period of pre-extraction before mining, as the working face advances forward, the cracks between layers will dynamically extend, thereby causing the cracks to continue to develop, resulting in a reduction in the airtightness of the coal rock mass. The mining cracks generated by the settlement and cracking of the coal rock layer, as well as the original cracks and pores, provide certain flow channels and spaces for the flow of gas. As the stress of the overlying rock strata is released, the gas adsorbed inside the overlying coal seam will be released and flow along the pores and crack network system of the coal matrix to the space where the mining cracks continue to extend. Due to the flow and migration of gas, the depressurized gas-enriched area will also dynamically migrate with the progress of the mining activities, until finally there will be a fracture field generated by mining with a roughly unchanged height. This fracture field will accompany the forward mining of the working face and continue to develop along the direction of the working face.

[0092] In this embodiment, during the hydraulic fracturing of the original borehole, the cracks extend upward to the upper rock layer and coal layer, and extend downward to the coal seam roof and coal layer in the lower part, so that the rock layer is broken and weakened. Through the roof fracturing technology, the hard rock layer in the collapse zone forms a certain number of cracks of varying lengths, widths, and heights, changing the physical and mechanical properties of the thick hard roof, so that the stress of the overlying rock layer is transformed from "hard transfer" to "soft transfer". The "hard transfer" can refer to the integrity of the coal rock layer before fracturing, the coal rock layer is hard against hard, and the stress is transferred from one hard rock to another hard rock. After fracturing, the coal seam and rock layer become soft and broken under the influence of the cracks, and the stress is transferred from the hard rock layer to the soft rock layer. At the same time, combined with the coal seam pressure relief measures in the underground tunnel, the gas pressure of the working face during mining can be effectively reduced, thereby reducing the danger of coal and gas outbursts at the working face. When the working face is mined near the fracturing area, the hanging top length of the hard rock formation is shortened, the stress concentration state is reduced, and at the same time, the dynamic load generated by the rock formation fracture is reduced, which can greatly reduce the risk of impact disasters on the hard rock formation during mining.

[0093] like Figure 4 As shown in the figure, in the unfractured state, the fractured layer and the lower fractured rock layer are intact, and the load q on the fractured upper layer is transmitted evenly, so the load on the coal seam is q. After fracturing, the rock mass of the fractured layer is destroyed, and the supporting capacity of the upper fractured roof within the fracturing range is reduced to q1. The stress distribution of the rock mass on the left side can be simplified into the stress linear increase zone AB section and the original stress zone OA section. Among them, the above-mentioned linear increase zone can also be called the pressure increase zone. The stress distribution of the rock mass on the left side can also include the original pressure zone and the pressure reduction zone.

[0094] Optionally, let the length of segment OA be c, segment AB be b, and segment BC be a, where the calculation formula of b can be:

[0095]

[0096] Where, b can be used to characterize the range of the stress increase zone (unit: m). C and θ can be used to characterize the cohesion (unit: MPa) and internal friction angle (unit: °) of the contact surface between the fracture layer and the upper rock layer. A can be used to characterize the lateral pressure coefficient. h c Can be used to characterize the height of the fracture layer (unit: m). t It can be used to characterize the stress concentration factor of the side support of the tunnel at time t after fracturing. γ can be used to characterize the bulk density of the overlying rock formation (unit: MN / m 3 ). h can be used to characterize the depth of the rock layer where the fracturing layer is located (unit: m).

[0097] After fracturing, the working face has the following stress distribution within the Ox range, that is, the distribution data can be calculated by the following formula:

[0098]

[0099] In the formula, q can be used to characterize the upper layer load after fracturing (q = γh, unit: MPa). q1 can be used to characterize the overburden load borne by the rock mass within the AB range after fracturing (unit: MPa). q2 can be used to characterize the maximum load in the stress-enhanced zone (unit: MPa). B can be used to characterize the range of the original rock stress zone (unit: m).

[0100] Alternatively, in order to explore the migration law and gas extraction volume of gas after mining and pressure relief, it is necessary to further analyze and study the permeability changes of the overburden above the coal seam during coal seam mining, such as Figure 5 According to the stress state of the coal and rock during mining, the cracks and permeability in the coal and overburden are divided into primary crack zone (also called primary crack compaction zone), elastic compaction zone (also called pressure relief elastic zone), compression-shear crack zone (also called compression-shear failure crack zone), tension-shear crack zone (also called tension-shear failure crack zone), and overburden tension crack zone. Among them, the original rock stress zone is the area where the stress value is the original rock stress, the pressure is stable and there are original cracks, that is, the original crack compaction zone, and the permeability is the initial permeability k0. The elastic zone is the stress value area from the original rock stress to the peak stress, and the pressure increases, that is, the pressure relief elastic zone, and the permeability is k1. The plastic zone is the stress value area from the peak stress to the original rock stress, that is, the compression-shear failure crack zone, and the permeability is k2. The pressure relief zone is the stress value area from the original rock stress to the 0 stress near the working face, that is, the tension-shear failure crack zone, and the permeability is k3. The tension failure crack zone is located below the overburden crack zone in the goaf.

[0101] Optionally, combined with the coal rock permeability test under different stress environments and damage states indoors, the permeability of coal rock in each partition can be calculated by the following formula:

[0102]

[0103] Among them, k' can be used to represent the increase in permeability of the rock formation after hydraulic fracturing, which can be measured through indoor tests.

[0104] Optionally, when the ground stress of the overlying rock strata is weakened, the roof deforms and collapses during the coal resource mining process, so that the concentrated stress of the coal pillar is weakened and the mining pressure relief increases the desorption of gas, thereby providing safe mining conditions for the safe and efficient mining of coal resources in the later stage.

[0105] In this embodiment, a common borehole is used during the coal resource exploitation process and the gas disaster management process to solve the gas problems at different stages of the coal resource exploitation process, providing a safety guarantee for the safe and efficient exploitation of coal resources, thereby avoiding the risk of coal and gas outbursts, reducing the hidden dangers of gas accumulation in the upper corner, and also reducing the ventilation pressure of the mine. The contradiction of drilling arrangement and interference between holes in resource development and disaster management at different stages are solved by sharing a common borehole through resource development and gas disaster management. Through coordinated mining and management of one borehole for multiple uses in the process of resource development and disaster management, the drilling cycle of coal resource exploitation is shortened, the drilling cost is reduced, and the efficiency of drilling is improved.

[0106] According to an embodiment of the present application, a gas extraction device is also provided. It should be noted that the gas extraction device of this embodiment can be used to execute the gas extraction method of embodiment 1 of the present application.

[0107] Figure 6 Schematic diagram of a gas extraction device according to an embodiment of the present application. Figure 6 As shown, the gas extraction device 60 may include: a first determination unit 602 , a second determination unit 604 , a prediction unit 606 , an adjustment unit 608 and an extraction unit 610 .

[0108] The first determining unit 602 is used to determine the geological structure characteristics of the geographical environment where the resources to be developed are located.

[0109] The second determination unit 604 is used to determine the initial gas extraction strategy corresponding to the resources to be developed based on the geological structure characteristics, wherein the initial gas extraction strategy is used to represent the rules for extracting the pre-extracted gas in the resources to be developed.

[0110] The prediction unit 606 is used to predict the extraction result of the pre-extraction gas under the initial gas extraction strategy, wherein the prediction extraction result is used to characterize the extraction situation of the pre-extraction gas.

[0111] The adjustment unit 608 is used to adjust the initial gas extraction strategy according to the predicted extraction result to obtain a target gas extraction strategy.

[0112] The extraction unit 610 is used to extract pre-extracted gas from the resources to be developed according to the target gas extraction strategy.

[0113] The gas extraction device of this embodiment determines the geological structure characteristics of the geographical environment where the resources to be developed are located through a first determination unit; determines the initial gas extraction strategy corresponding to the resources to be developed based on the geological structure characteristics through a second determination unit, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; predicts the predicted extraction result of the pre-extracted gas under the initial gas extraction strategy through a prediction unit, wherein the predicted extraction result is used to characterize the extraction situation of the pre-extracted gas; adjusts the initial gas extraction strategy according to the predicted extraction result through an adjustment unit to obtain a target gas extraction strategy; extracts the pre-extracted gas from the resources to be developed according to the target gas extraction strategy through the extraction unit, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving gas extraction efficiency.

[0114] The embodiment of the present application may provide a computer terminal, which may be any computer terminal device in a computer terminal group. Optionally, in this embodiment, the computer terminal may also be replaced by a terminal device such as a mobile terminal.

[0115] Optionally, in this embodiment, the computer terminal may be located in at least one network device among a plurality of network devices of the computer network.

[0116] In this embodiment, the above-mentioned computer terminal can execute the program code of the following steps in the gas extraction method: determining the geological structure characteristics of the geographical environment where the resources to be developed are located; based on the geological structure characteristics, determining the initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; under the initial gas extraction strategy, predicting the predicted extraction results of the pre-extracted gas, wherein the predicted extraction results are used to characterize the extraction of the pre-extracted gas; according to the predicted extraction results, adjusting the initial gas extraction strategy to obtain a target gas extraction strategy; according to the target gas extraction strategy, extracting the pre-extracted gas from the resources to be developed.

[0117] Optionally, Figure 7 is a structural block diagram of a computer terminal according to an embodiment of the present application, such as Figure 7 As shown, the computer terminal 708 may include: one or more (only one is shown in the figure) processors 702 , a memory 704 and a transmission device 706 .

[0118] The memory can be used to store software programs and modules, such as program instructions / modules corresponding to the gas extraction method and device in the embodiment of the present application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, that is, realizing the above-mentioned gas extraction method. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include a memory remotely arranged relative to the processor, and these remote memories can be connected to the computer terminal 708 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0119] The processor can call the information and application programs stored in the memory through the transmission device to execute the following steps: determine the geological structure characteristics of the geographical environment where the resources to be developed are located; based on the geological structure characteristics, determine the initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas from the resources to be developed; under the initial gas extraction strategy, predict the predicted extraction results of the pre-extracted gas, wherein the predicted extraction results are used to characterize the extraction of the pre-extracted gas; according to the predicted extraction results, adjust the initial gas extraction strategy to obtain the target gas extraction strategy; according to the target gas extraction strategy, extract the pre-extracted gas from the resources to be developed.

[0120] It can be understood by those skilled in the art that Figure 7 The structure shown is for illustration only, and the computer terminal 708 may also be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a PDA, a mobile Internet device (Mobile Internet Devices, referred to as MID), a PAD, or other terminal devices. Figure 7 The structure of the computer terminal 708 is not limited. For example, the computer terminal 708 may also include Figure 7 More or fewer components (such as network interfaces, display devices, etc.) shown in, or having Figure 7 Different configurations are shown.

[0121] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing the hardware related to the terminal device through a program, and the program can be stored in a computer-readable storage medium, and the storage medium may include: a flash drive, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc.

[0122] According to an embodiment of the present application, a computer-readable storage medium is also provided, which includes a stored program, wherein the program executes the gas extraction method in the above embodiment.

[0123] Optionally, in this embodiment, the computer-readable storage medium may be located in any one of the computer terminals in a computer terminal group in a computer network, or in any one of the mobile terminals in a mobile terminal group.

[0124] Optionally, in this embodiment, the computer-readable storage medium is configured to store program code for executing the following steps: determining the geological structure characteristics of the geographical environment where the resources to be developed are located; based on the geological structure characteristics, determining an initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas from the resources to be developed; under the initial gas extraction strategy, predicting the predicted extraction results of the pre-extracted gas, wherein the predicted extraction results are used to characterize the extraction of the pre-extracted gas; according to the predicted extraction results, adjusting the initial gas extraction strategy to obtain a target gas extraction strategy; according to the target gas extraction strategy, extracting pre-extracted gas from the resources to be developed.

[0125] Optionally, the computer-readable storage medium may also execute program codes for the following steps: predicting gas hazard data of resources to be developed during the development phase based on geological structural characteristics; and determining an initial gas extraction strategy based on the gas hazard data.

[0126] Optionally, the computer-readable storage medium may also execute program codes of the following steps: utilizing geological structural characteristics to simulate changes in resources to be developed during the development phase to obtain gas hazard data.

[0127] Optionally, the computer-readable storage medium may also execute program codes for the following steps: obtaining mining conditions of the resources to be developed and geological conditions of the mining area for mining the resources to be developed; and determining an initial gas extraction strategy based on the mining conditions, geological conditions and gas hazard data.

[0128] Optionally, the computer-readable storage medium can also execute program codes for the following steps: determining the distribution data of stress loads in the undeveloped resources and the permeability change data of the undeveloped resources during the process of exploiting the undeveloped resources; predicting the amount of depressurized gas to be extracted from the undeveloped resources based on the distribution data and the permeability change data; and determining a gas extraction strategy for extracting the depressurized gas based on the amount to be extracted.

[0129] Optionally, the computer-readable storage medium may also execute program codes of the following steps: using simulation software to simulate the permeability of the distribution data and the permeability change data to obtain the amount to be extracted.

[0130] In this embodiment, the geological structure characteristics of the geographical environment where the resources to be developed are located are determined, and based on the geological structure characteristics, the initial gas extraction strategy is determined. The extraction of pre-extracted gas under the initial gas extraction strategy can be predicted. Based on the extraction situation, the initial extraction strategy is adjusted to obtain a target gas extraction strategy. The pre-extracted gas can be extracted according to the target gas extraction strategy, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving gas extraction efficiency.

[0131] According to an embodiment of the present application, a processor is also provided, which is used to run a program, wherein when the program is run by the processor, the gas extraction method in the above embodiment is executed.

[0132] Optionally, in this embodiment, the computer terminal may be located in at least one network device among a plurality of network devices of the computer network.

[0133] In this embodiment, the above-mentioned computer terminal can execute the program code of the following steps in the gas extraction method: determining the geological structure characteristics of the geographical environment where the resources to be developed are located; based on the geological structure characteristics, determining the initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas in the resources to be developed; under the initial gas extraction strategy, predicting the predicted extraction results of the pre-extracted gas, wherein the predicted extraction results are used to characterize the extraction of the pre-extracted gas; according to the predicted extraction results, adjusting the initial gas extraction strategy to obtain a target gas extraction strategy; according to the target gas extraction strategy, extracting the pre-extracted gas from the resources to be developed.

[0134] Among them, the memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the gas extraction method and device in the embodiment of the present application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory, that is, realizing the above-mentioned gas extraction method. The memory may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include a memory remotely arranged relative to the processor, and these remote memories can be connected to the computer terminal via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0135] The processor can call the information and application programs stored in the memory through the transmission device to execute the following steps: determine the geological structure characteristics of the geographical environment where the resources to be developed are located; based on the geological structure characteristics, determine the initial gas extraction strategy corresponding to the resources to be developed, wherein the initial gas extraction strategy is used to represent the rules for extracting pre-extracted gas from the resources to be developed; under the initial gas extraction strategy, predict the predicted extraction results of the pre-extracted gas, wherein the predicted extraction results are used to characterize the extraction of the pre-extracted gas; according to the predicted extraction results, adjust the initial gas extraction strategy to obtain the target gas extraction strategy; according to the target gas extraction strategy, extract the pre-extracted gas from the resources to be developed.

[0136] Optionally, the processor may also execute program codes of the following steps: predicting gas hazard data of resources to be developed during the development phase based on geological structural characteristics; and determining an initial gas extraction strategy based on the gas hazard data.

[0137] Optionally, the processor may also execute the program code of the following steps: utilizing geological structural characteristics to simulate changes in resources to be developed during the development phase to obtain gas hazard data.

[0138] Optionally, the processor may also execute program codes of the following steps: obtaining mining conditions of the resources to be developed and geological conditions of the mining area for mining the resources to be developed; and determining an initial gas extraction strategy based on the mining conditions, geological conditions and gas hazard data.

[0139] By adopting the embodiment of the present application, the geological structure characteristics of the geographical environment where the resources to be developed are located are determined, and the initial gas extraction strategy is determined based on the geological structure characteristics. The extraction situation of the pre-extracted gas under the initial gas extraction strategy can be predicted. Based on the extraction situation, the initial extraction strategy is adjusted to obtain the target gas extraction strategy. The pre-extracted gas can be extracted according to the target gas extraction strategy, thereby solving the technical problem of low gas extraction efficiency and achieving the technical effect of improving the gas extraction efficiency.

[0140] According to an embodiment of the present application, a computer program product is also provided. The computer program product includes computer instructions, wherein the computer instructions, when executed by a processor, implement the gas extraction method in the above embodiment.

[0141] An embodiment of the present application may provide an electronic device, which may include a memory and a processor.

[0142] Figure 81 is a block diagram of an electronic device for a gas extraction method according to an embodiment of the present application. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and / or required herein.

[0143] like Figure 8 As shown, the device 800 includes a computing unit 801, which can perform various appropriate actions and processes according to a computer program stored in a read-only memory (ROM) 802 or a computer program loaded from a storage unit 808 to a random access memory (RAM) 803. In the RAM 803, various programs and data required for the operation of the device 800 can also be stored. The computing unit 801, the ROM 802, and the RAM 803 are connected to each other via a bus 804. An input / output (I / O) interface 805 is also connected to the bus 804.

[0144] A number of components in the device 800 are connected to the I / O interface 805, including: an input unit 806, such as a keyboard, a mouse, etc.; an output unit 804, such as various types of displays, speakers, etc.; a storage unit 808, such as a disk, an optical disk, etc.; and a communication unit 809, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 809 allows the device 800 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0145] The computing unit 801 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the computing unit 801 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various computing units running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The computing unit 801 performs the various methods and processes described above, such as a verification method for data. For example, in some embodiments, the verification method for data may be implemented as a computer software program, which is tangibly contained in a machine-readable medium, such as a storage unit 808. In some embodiments, part or all of the computer program may be loaded and / or installed on the device 800 via the ROM 802 and / or the communication unit 809. When the computer program is loaded into RAM 803 and executed by the computing unit 801, one or more steps of the data verification method described above may be performed. Alternatively, in other embodiments, the computing unit 801 may be configured to perform the data verification method in any other appropriate manner (e.g., by means of firmware).

[0146] According to an embodiment of the present application, a gas extraction method is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0147] Various embodiments of the systems and techniques described above herein may be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include: being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor that may be a dedicated or general purpose programmable processor that may receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0148] The program code for implementing the method of the present application can be written in any combination of one or more programming languages. These program codes can be provided to a processor or controller of a general-purpose computer, a special-purpose computer or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code can be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0149] In the context of the present application, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0150] To provide interaction with a user, the systems and techniques described herein may be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or an LCD (liquid crystal display, monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or a path ball) through which the user can provide input to the computer. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0151] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a Local Area Network (LAN), a Wide Area Network (WAN), and the Internet.

[0152] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0153] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0154] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0155] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0156] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0157] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0158] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or all or part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0159] The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for extracting gas, characterized in that: include: Determine the geological and structural characteristics of the geographical environment where the resources to be developed are located; Based on the geological structure characteristics, determining an initial gas extraction strategy corresponding to the resource to be developed, wherein the initial gas extraction strategy is used to represent a rule for extracting pre-extracted gas from the resource to be developed; Under the initial gas extraction strategy, predicting the predicted extraction result of the pre-extracted gas, wherein the predicted extraction result is used to characterize the extraction condition of the pre-extracted gas; According to the predicted extraction result, the initial gas extraction strategy is adjusted to obtain a target gas extraction strategy; According to the target gas extraction strategy, the pre-extracted gas is extracted from the resources to be developed.

2. The method according to claim 1, characterized in that The determining of the initial gas extraction strategy corresponding to the resource to be developed based on the geological structure characteristics includes: Based on the geological structure characteristics, predict the gas hazard data of the resource to be developed during the development stage; Based on the gas hazard data, the initial gas extraction strategy is determined.

3. The method according to claim 2, characterized in that The method of predicting the gas hazard data of the resource to be developed during the development phase based on the geological structure characteristics includes: By utilizing the geological structure characteristics, the changes of the resources to be developed during the development stage are simulated to obtain the gas hazard data.

4. The method according to claim 2, characterized in that: The method further comprises: Obtaining the mining conditions of the resource to be developed and the geological conditions of the mining area for mining the resource to be developed; The determining the initial gas extraction strategy based on the gas hazard data includes: determining the initial gas extraction strategy based on the mining conditions, the geological conditions and the gas hazard data.

5. The method according to claim 1, characterized in that The method further comprises: Determining distribution data of stress loads in the resource to be developed and permeability of the resource to be developed during the process of exploiting the resource to be developed; Based on the distribution data and the permeability, predict the amount of depressurized gas to be extracted from the resource to be developed; Based on the amount to be extracted, a gas extraction strategy for extracting the depressurized gas is determined.

6. The method according to claim 5, characterized in that The method of predicting the amount of depressurized gas to be extracted from the resource to be developed based on the distribution data and the permeability includes: The distribution data and the permeability are simulated using simulation software to obtain the amount to be extracted.

7. A gas extraction device, characterized in that: include: The first determination unit is used to determine the geological structure characteristics of the geographical environment where the resources to be developed are located; A second determination unit is used to determine an initial gas extraction strategy corresponding to the resource to be developed based on the geological structure characteristics, wherein the initial gas extraction strategy is used to represent a rule for extracting pre-extracted gas from the resource to be developed; A prediction unit, used for predicting the predicted extraction result of the pre-extracted gas under the initial gas extraction strategy, wherein the predicted extraction result is used to characterize the extraction condition of the pre-extracted gas; an adjusting unit, configured to adjust the initial gas extraction strategy according to the predicted extraction result to obtain a target gas extraction strategy; An extraction unit is used to extract the pre-extracted gas from the resources to be developed according to the target gas extraction strategy.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 6.

9. A processor, characterized in that: The processor is used to run a program, wherein the program executes the method according to any one of claims 1 to 6 when run by the processor.

10. A computer program product, characterized in that The method comprises computer instructions, which implement the method according to any one of claims 1 to 6 when executed by a processor.

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